Water bottle flex cap



FIG. 1 is a Perspective view of a water bottle flex cap showing my new design;

FIG. 2 is a Front view thereof;

FIG. 3 is a Back view thereof;

FIG. 4 is a Right-side view thereof;

FIG. 5 is a Left-side view thereof;

FIG. 6 is a Top view thereof;

FIG. 7 is a Bottom view thereof; and,

FIG. 8 is a Perspective view of a water bottle flex cap showing in handle upside.

The broken lines in the drawings depict portions of the water bottle flex cap that form no part of the claimed design. 

CLAIM I claim the ornamental design for a water bottle flex cap, as shown and described. 